Is this a question about Scala or about Eclipse? If you use var or similar as the type, do you actually need to know the correct runtime type in Scala?
means methods inside method call I don't no such concepts that its, because one method call contains other method call only one call, how does three methods will execute
Why? That sounds like very dubious design.
I assume this was already clear to you, isn't it?
Why do you think the call to myPrpocess() should be enclosed in a try-catch?
Does that method throw an exsception?